The AD1837 is a 5V stereo audio codec with various features and characteristics. It supports sample rates up to 96 kHz and has 16-/20-/24-bit word lengths. The codec features multibit modulators for reduced idle tones and noise floor. It also includes ADCs and DACs with -95 dB THD + N, 105 dB SNR and dynamic range, and -92 dB THD + N, 108 dB SNR and dynamic range, respectively. The codec also has software-controllable volume controls, clickless mutes, digital de-emphasis processing, and supports multiple clock modes and serial data interfaces.
The Analog Devices AD1837 is a 24-bit, 96 kHz audio codec containing two ADCs and eight DACs. This Silicon Anomaly Sheet identifies specific known issues in the current version of the part that have been resolved in subsequent revisions (AD1837A). The document focuses on phase shift bugs related to ADC sample loading and timing.
Synchronize the rising edge of PD/RST with the appropriate LRCLK or FSTDM edge to ensure safe result updates.
Programming the IMCLK divider and ADC sample rate registers must occur during the internal reset time.
No, it is not recommended because powering down and back up can cause phase shift issues.